Amazon E-Books Is a Multi-Billion Dollar Business, Up 70 Percent - Tricia Duryee - Commerce - AllThingsD

tbd how much of that revenue gain is due to significant increases in Kindle book prices over the last year

"Amazon is notorious for not commenting on the performance of its hardware business, and that policy didn’t change this quarter. But in Amazon’s earnings release, Amazon’s CEO Jeff Bezos did open up a little bit about the company’s e-book business as a whole.
“We’re now seeing the transition we’ve been expecting,” he said. “After five years, eBooks is a multi-billion dollar category for us and growing fast — up approximately 70 percent last year. In contrast, our physical book sales experienced the lowest December growth rate in our 17 years as a book seller, up just 5 percent. We’re excited and very grateful to our customers for their response to Kindle and our ever expanding ecosystem and selection.”"

Amazon E-Books Is a Multi-Billion Dollar Business, Up 70 Percent - Tricia Duryee - Commerce - AllThingsD